Dear All,
I am working on the Polyphase IIR filter for subbanding
in Acoustic Echo Cancellation. For subbanding I am using Polyphase IIR
filter.
To calculate the coefficents of Polyphase IIR filter, I
am not getting any sufficient information (for calculation of
coefficients of Polyphase IIR filter) from any do***ents.
I found some existed Polyphase IIR filter coefficient
values but I want to know that how to calculate the filter
coefficients of Polyphase IIR filter.
In some do***ents I found that bit-flipping algorithm is
used for the designing(calculatin of coefficients) of Decimated
Polyphase IIR filter. But when I went through the bit-flipping
algorithm I understood that it is used to optimise the calculated(or
existed) coefficients constrained to the coefficient bit length.
So first I have to calculate the coefficients of filter by
some method and then I have to optimise that.
But to calculate that coefficient values I am finding the
related do***ents.
If any one knows the links and information regarding this
please reply to this mail.
Waiting for your valuable suggestions and replies.
Thanks in advance.
Regards,
Aparna Ram.K.
